To push a crate from point A to point B at the door of a warehouse, a resultant force of 2500 ? is needed. To accomplish this, Pedro Juancho, and Joe Marie volunteered to push the crate. If Pedro exerts 750 ? and Juancho exerts 1500 ? in the direction shown, determine the force that Jose Marie must exert to move the crate to desired location

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Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!